/Engine/Source/Runtime/Experimental/Chaos/Public/Chaos/ContactModification.h
Modify angular velocity. For simulated objects: Previous frame's rotation is modified to maintain PBD implicit velocity.
void ModifyParticleAngularVelocity ( [FVec3](API\Runtime\ChaosCore\Chaos\FVec3) AngularVelocity, int32 ParticleIdx )